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MathGroup Archive 2004

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Re: Simple expression won't simplify

  • To: mathgroup at smc.vnet.net
  • Subject: [mg48979] Re: Simple expression won't simplify
  • From: Paul Abbott <paul at physics.uwa.edu.au>
  • Date: Fri, 25 Jun 2004 17:52:22 -0400 (EDT)
  • Organization: The University of Western Australia
  • References: <cbgjg5$cfg$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

In article <cbgjg5$cfg$1 at smc.vnet.net>, p at dirac.org (Peter Jay Salzman) 
wrote:

>                            m^2
>    sqrt{ a } sqrt{ ------------------- }
>                     m^2 + t^2 a^2 h^2
> 
>    ---------------------------------------
>                 m^2   a
>       sqrt{ ------------------- }
>              m^2 + t^2 a^2 h^2
> 
> 
> How do I coax Mathematica to admit this expression is 1?

  Simplify[(Sqrt[\[Alpha]]*Sqrt[m^2/(m^2 + t^2*\[Alpha]^2*\[HBar]^2)])/
    Sqrt[(m^2*\[Alpha])/(m^2 + t^2*\[Alpha]^2*\[HBar]^2)], \[Alpha] > 0]

Cheers,
Paul

-- 
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